Process for the production of ethylesters of halogen sulphonic acids



Patented Sept. 3Q, I924.

WILHELM TRAUJBE, 01E BERLIN, GERIIANY.

PROCESS FOR THE PRODUCTION OF ETHYLESTEIQS 0F HALOGEN SULPHQNIC ACIDS.

No Drawing.

To all whom it may concern:

Be it known that I, Professor Dr. WIL- nmLM TRAUBE, citizen of Germany, residing at Berlin, in Prussia, Germany, have invented new and useful Improvements in Processes for the Production of Ethylesters of Halogen Sulphonic Acids, of which the following is a specification.

As is lmown the isolation of ethylene from gas mixtures, such as coke oven gases, brown coal distillation gases, and similar gases, is extremely diflicult, especially on account of the low partial pressure of the ethylene in the gas mixture, and the highly complex character of such gas mixture. The combination of ethylene with concentrated sulfuric acid at ordinary room temperature takes place very slowly as is well known, whereas at considerably higher temperatures, the combination of the ethylene with the sulfuric acid takes place much more readily, but there is considerable carbonizatioll or partial coking of the reacting materia s.

I now have found that the said difficulty can be overcome by, combining the ethylene in these gases with halogensulphonic acids. This process consists in treating the gases containing ethylene with chlorsulphonic acid. The chlorsulphonic ethyl ester is thus obtained in a very simple manner without the use of catalysers or other precautionar measures. Gas mixtures with a smal amount of ethylene can be used because ethylene is absorbed in an even and rapid manner. Durin this process the reaction masses are suita ly cooled. The chlorsulphonic ethyl ester thus produced can be easily decomposed with water into alcohol, hydrochloric acid and sulphuric acid. This decomposition is performed with a less quantity of water than that of ethylsulphurieacid, in consequence of this the expense of distillation is considerablyreduoed. Example.-Purified coke-gas, containing in 100 volumes of gas e. g. about two volumes of ethylene, is led through an apparatus which contains liquid chlorsulfonic acid while cooling. The resulting liquid con- Application 11166 June 28, 1920. Serial H0. 392,444).

tains about 90 to 100 per cent of chlorsulfonic ethylester.

Instead of chlorsulphonic acid in the same way fluorsulphonic acid can be used, fluorsulphonic ethyl ester being thus obtained which is split up by water in the same way as above.

Having now particularly described and ascertained the nature of my said invention, I declare that what I claim is 1. A process for the production of ethylesters of halogen-sulphonic acid by treat ing this acid with ethylene consistin in bringing into contact with halogensulfiinic acid such gases that contain ethylene in a very diluted state only.

2. A process for the production of ethylesters of chlorsulphonic acid by treating this acid with ethylene consisting in brin ing into contact with chlorsulfonic acid such, gases that contain ethylene in a very dilute state only.

3. A process for the production of ethylesters of chlorsulphonic acid by treating this acid with ethylene consisting in bringing into contact coke-gases with chlorsulfonic acid.

4:. A process for the production of ethylesters of halogen-sulphonie acid by treating this acid with ethylene consisting in brin ing into contact with halogensulphonic acld while cooling, gases that contain in a very diluted state only.

5. A process for the production of eth lester of chlorsulphonic acid by treating t is acid with ethylene consisting in bringing into contact with chlorsulphonic acid while cooling, gases that contain ethylene in a very diluted state only.

6. A process for quantitively and rapidly absorbing ethylene from gaseous product of destructive distillation'of coal, such gases containing a small percentage only of ethylene consisting in treating the said gases with chlorsulphonic acid.

7. A process for quantitively and rapidly absorbing ethylene from aseous product of destructive distillation oi coal, such gases containing a small percentage only of ethylene eth lene consisting in treating the said gases In testimony whereof I have hereunto set wit chlorsulphonio acid while cooling. my hand in presence of two subscribing 8. A process for the utilization of the. witnesses.

eth lene contained. in coal-gases, coke-gases 5 an the like, consisting in converting said I DR. TRAUBE.

ethylene into ethyl chlorsulphonate by Witnesses: treating said ases containing the ethylene FELIX HEINEMDUM,

with chlorsulp onic acid. WALTER Somu. 

